Crescimento inicial de mudas de gravioleira em substratos contendo biossólido.

Abstract

The use of biosolids in the agronomic sector presents promising factors, bringing numerous benefits when applied correctly. The present work aimed to evaluate the ideal doses of biosolid from the textile industry in the initial growth of soursop seedlings. The experiment was installed in a greenhouse of the Fruit Sector of the Center for Agricultural Sciences (CCA/UFPB), Campus II, located in the municipality of Areia - PB. It was conducted in a randomized block design (DBC), with five treatments, corresponding to biosolid concentrations in the substrate (0, 4, 8, 12, 16% in volume) in three blocks. The soil used was Latosol, and the biosolid came from the textile industry. Over the course of the experiment, seedling height, stem diameter, fresh matter mass and shoot and root dry matter were analyzed. It was observed the growth rate of the stem diameter and plant height as the doses increased, in the same way the dry matter mass of the plant parts was behaved. It was also observed the appearance of symptoms of toxicity of the seedlings with the doses applied to the biosolid.